48.130. Underground storage tanks for regulated substances. (a) At least thirty (30) days before beginning installation of any underground storage tank regulated by the state, owner and operators must notify the authority of their intent to install the underground storage tank system and pay a filing fee required by section 48.310. Notification can be a copy of the state form, or the city supplied form. Notification must include type of tank system to be installed, method of cathodic protection, and release detection.

(b) At least ten (10) days before beginning either removal, abandonment, or switching the stored material to or from a regulated substance, owners and operators of an underground tank must notify the authority of their intent to remove, abandon or change-in-service, and pay a filing fee required by section 48.310.

(c) Upon underground storage tank removal or abandonment, all associated fill, vent, and product lines must be removed, regardless of tank size or use. Exceptions to this requirement are tanks that are being replaced within thirty (30) days.

(d) Authority shall have the right to inspect all tank locations before, during, and after installation, removal, or abandonment. Applicant shall notify the authority not less than forty-eight (48) hours prior to installing, removing, or abandoning any underground storage tank to arrange a site inspection. (2000-Or-017, § 1, 4-7-00; 2002-Or-169, §§ 8, 9, 11-8-02)

48.140. Soil sampling required for storage tank closure.

(1) For tanks less than ten thousand (10,000) gallons in size, at least one (1) soil sample shall be taken under the center of the tank, one (1) to two (2) feet below the floor of the tank excavation.

(2) For tanks greater than ten thousand (10,000) gallons in size at least two (2) soil samples shall be taken near the base of the tank, one (1) below the fill pipe and the other on the opposite end.

(3) In addition to the sampling required in (1) and (2), a soil sample shall be taken five (5) feet below each dispenser island, where the dispenser island is not located over the tank basin.

48.145. Fuel oil tanks less than one thousand one hundred (1,100) gallons. (a) At least fifteen (15) days before beginning installation, removal or abandonment, of a fuel oil tank less than one thousand one hundred (1,100) gallons, the owner and operators must submit a permit application to the authority, pay a filing fee required by section 48.310, and receive a permit.

(b) Fuel oil tanks less than one thousand one hundred (1,100) gallons may only be abandoned when removal of the tank would undermine the structure. In these circumstances, the permit application must be submitted along with a letter from a licensed engineer stating that the tank cannot be safely removed.

(c) Upon underground storage tank removal or abandonment, all associated fill, vent, and product lines must be removed, regardless of tank size or use. Exceptions to this requirement are tanks that are being replaced within thirty (30) days.

(d) Authority shall have the right to inspect all tank locations before, during, and after installation, removal, or abandonment. Applicant shall notify the authority not less than forty-eight (48) hours prior to installing, removing, or abandoning any underground storage tank to arrange a site inspection.

(e) At least one soil sample must be taken, with the abandonment or removal of any fuel oil tank greater than two hundred fifty (250) gallons. A summary report must be submitted to the authority within forty-five (45) days. (2002-Or-169, § 11, 11-8-02)

48.150. Underground storage tanks not in service.

(1) Notify the authority of intent to so render the tank.

(2) Secure the fill line cap and discharge line against tampering and product leakage.

(b) An underground tank left in "temporarily out of service" condition in excess of twelve (12) months, shall pay an annual registration fee as established in section 48.310. (2002-Or-169, § 12, 11-8-02)

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